Full Stack Developer

Xcel Engineering • Oak Ridge, TN

50d • Onsite

About The Position

XCEL Engineering is seeking a versatile Full Stack Software Engineer to support multiple concurrent software projects within a Department of Energy (DOE) Research & Development environment. This role requires an on-site presence and close collaboration with technical teams, stakeholders, and government clients. The ideal candidate is comfortable working across the entire development lifecycle from gathering client requirements and translating concepts into technical designs, through development, testing, deployment, and long-term support. Candidates must be adaptable, detail-oriented, and capable of managing multiple priorities in a structured, security-focused environment.

Requirements

• Bachelor's degree in a scientific field or equivalent combination of education and experience coupled with 8 years of software development experience.
• Bachelors degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).
• 3+ years of professional full-stack development experience
• JavaScript, TypeScript, Python, SQL
• Backend Frameworks-Fast API
• Frontend FrameworksVue.js 2 & Vue.js 3
• State Management-Pinia
• UI Libraries-Vuetify
• Databases-PostgreSQL
• Other Technologies-GraphQL
• Demonstrated experience delivering production-ready applications end-to-end.
• Strong communication skills and ability to translate business needs into technical solutions.
• Ability to obtain and maintain any required facility clearances or background checks.

Nice To Haves

• Java development experience
• Experience working in government, national laboratory, or regulated environments
• Familiarity with CI/CD pipelines and DevOps practices
• Containerization technologies (Docker, Kubernetes)
• Experience with automated testing frameworks

Responsibilities

• Collaborate with government clients and internal stakeholders to gather, analyze, and refine technical and functional requirements.
• Design, architect, and develop full-stack applications from concept to completion.
• Work on multiple simultaneous projects with varying timelines and technical scopes.
• Develop scalable backend services and APIs.
• Build responsive, user-friendly front-end interfaces aligned with UI/UX best practices.
• Participate in code reviews, testing, debugging, and performance optimization.
• Maintain documentation for system architecture, code, and processes.
• Ensure compliance with security, privacy, and operational standards required in a federal R&D environment.
• Provide ongoing maintenance, enhancements, and technical support for deployed applications.

Benefits

• Equal Opportunity/Affirmative Action Employer
• Qualified applicants will receive consideration for employment without regard to race, color, religion, religious creed, gender, sexual orientation, gender identity, gender expression, transgender, pregnancy, marital status, national origin, ancestry, citizenship status, age, disability, protected Veteran Status, genetics or any other characteristics protected by applicable federal, state or local law.
• Right to request a reasonable accommodation if unable or limited in ability to use or access current openings as a result of a disability.
• Background check
• Drug screening

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 1-10 employees